[BoostBook] Added support for SVN fixed-length $Date$ keyword.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85021 b8fc166d-592f-0410-95f2-cb63ce0dd405
added missing semicolon and kept maximum line width at 80

git-svn-id: http://svn.boost.org/svn/boost/trunk@85022 b8fc166d-592f-0410-95f2-cb63ce0dd405
[geometry][index]example: added serialization preliminary test/example (not compiling since serialization is not yet implemented)

git-svn-id: http://svn.boost.org/svn/boost/trunk@85023 b8fc166d-592f-0410-95f2-cb63ce0dd405